springboot多环境日志配置，启动时logback-test.xml文件冲突导致启动失败：openFile(null,true) call failed. java.io.FileNotFoundException

　　如题，在项目中用到了4个环境的日志配置文件，启动时在application.properties中指定环境，让springboot自动加载logback对应的配置文件：

　　每个环境的日志目录都不一样，比如sit和test环境分别是：

 

　　如果spring.profiles.active配置的是test，那么一切正常，非test环境，则启动失败。比如我现在配置spring.profiles.active=sit来启动联调环境，报错日志如下：

2020-01-10 14:32:33.579 |-ERROR [main] org.springframework.boot.SpringApplication [822] -| Application run failed
java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR] - Failed to create parent directories for [/home/wlf/logs/prize/error-20200110.log]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR] - openFile(null,true) call failed. java.io.FileNotFoundException: /home/wlf/logs/prize/error-20200110.log (No such file or directory)
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CDR] - Failed to create parent directories for [/home/wlf/REPORT/send/prize20020000601809988202001101432.txt]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CDR] - openFile(null,true) call failed. java.io.FileNotFoundException: /home/wlf/REPORT/send/prize20020000601809988202001101432.txt (No such file or directory)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:167)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.reinitialize(LogbackLoggingSystem.java:220)
        at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:73)
        at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:118)
        at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:289)
        at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:264)
        at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:226)
        at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:203)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
        at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
        at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
        at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:341)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:191)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:105)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:71)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
        at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
        at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
        at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:341)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1214)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1203)
        at com.wlf.order.prize.PrizeApplication.main(PrizeApplication.java:12)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:51)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52)
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:51)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52)
Caused by: java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR] - Failed to create parent directories for [/home/wlf/logs/prize/error-20200110.log]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[ERROR] - openFile(null,true) call failed. java.io.FileNotFoundException: /home/wlf/logs/prize/error-20200110.log (No such file or directory)
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CDR] - Failed to create parent directories for [/home/wlf/REPORT/send/prize20020000601809988202001101432.txt]
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CDR] - openFile(null,true) call failed. java.io.FileNotFoundException: /home/wlf/REPORT/send/prize20020000601809988202001101432.txt (No such file or directory)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:167)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.reinitialize(LogbackLoggingSystem.java:220)
        at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:73)
        at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
        at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:118)
        at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:289)
        at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:264)
        at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:226)
        at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:203)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
        at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
        at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
        at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:341)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:191)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:105)
        at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:71)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
        at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
        at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
        at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
        at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:341)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1214)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1203)
        at com.wlf.order.prize.PrizeApplication.main(PrizeApplication.java:12)
        ... 8 more

　　我们从日志中看到，我启动的是sit，可spring boot竟然跑去读取logback-test.xml里面的信息了，我的sit环境在prize用户下，当然找不到test环境下wlf用户下的文件了。

　　诡异的是为何spring boot会去读取logback-test.xml而不是logback-sit.xml呢？原因其实就在源码里。在LogbackLoggingSystem的118行initialize初始化方法中，spring boot开始加载logback：

　　继续点进去，来到抽象父类的世界：

　　继续在抽象父类里畅游，我们发现spring boot先去找自身特定的logback配置文件，找到了就执行reinitialize方法（见上面日志标黄处）：

　　既然日志打印了，说明代码已经取到了config对象。我们关心的是spring boot取到的是哪些指定的logback配置？怎么取的？其实一切尽在getSelfInitializationConfig方法中：

 

　　上面已经回答刚才那两个问题：

 　　1、logback配置文件怎么取的——很明显，它拿指定的logback文件去classpath中（比如我们的src/resources）查找匹配，如果匹配上了就加载。

　　2、核心问题来了：取哪些指定的logback配置文件——我们需要先结束抽象父类的游览旅程了，回到LogbackLoggingSystem去：

 　　一目了然，我们的4个日志配置文件里，刚好有一个logback-test.xml跟logback默认的配置重复了，而且能被匹配出来，spring boot当然优先读取默认的logback-test.xml，管你的环境变量是prod还是sit还是dev。

　　既然知道了问题所在，解决方案也自然就出来了：别给测试环境的日志配置起名叫logback-test了，随便改个名吧。记得改名后重先跑maven要先clean一把，否则原来logback-test.xml还会在你的jar包里，问题依然存在。